Use of a phase-shifting transformer for increasing the power transmission capacity, taking into account the mode of the adjacent network

In this research, we develop measures aimed at improving the efficiency of power systems by increasing their transmission capacity. To this end, a FACTS system based on the phase-shifting transformer with a thyristor switch developed at the Power Engineering Institute named after G.M. Krzhizhanovsky was used. The efficiency of the phaseshifting transformer under study for increasing the transmission capacity of power systems was determined by the maximum permissible cross-section flows of the Barnaul-Biysk node-2. The calculations were performed for normal and various post-accident schemes using the RastrWin3 software package. Such factors as the regulation of the taps of the phase-shifting transformer and various places of its installation were considered. For the section under consideration, the phase-shifting transformer increased the maximum permissible flow by 4–12%. The determining factor limiting the maximum permissible flow in the Barnaul-Biysk node-2 was found to be the current overload of the 110 kV lines of the adjacent network. The greatest effect of increasing the maximum permissible overflow was noted when the phase-shifting transformer was installed on the 220 kV line adjacent to the section, parallel to the 110 kV lines (which were overloaded when the mode became heavier), rather than on the 220 kV line included in the section. Similar calculations were performed for normal and post-accident schemes of an alternative option, which involved replacing wires and installing automatic equipment for limiting equipment overload on overloaded 110 kV lines. The obtained results show that the effect of increasing the transmission capacity for this option comprised 4%.

1. Kholmsky VG. The use of regulated transformers. Moscow: Gosenergoizdat; 1950, 152 p. (In Russ.)

2. Misrihanov MSh, Ryabchenko VN, Sitnikov VF. Damping fluctuations in power flows using FACTS devices with control systems based on modal synthesis. Vestnik Ivanovskogo gosudarstvennogo energeticheskogo universiteta = Vestnik of Ivanovo State Power Engineering University. 2001;3:43–47. (In Russ.)

3. Bushuev VV, Kalyuzhny AKh, Krechmer LV, Shushuev AA. Use of phase-shifting devices to simplify flow distribution in power systems. Elektrichestvo. 1990;11:6–11. (In Russ.)

4. Kochkin VI, Shakaryan YuG. Operating condition of controlled power transmission lines. Elektrichestvo. 1997;9:3–8. (In Russ.)

5. Stel'makov VN, Zhmurov VP, Tarasov AN, Grinshtejn BI, Tuzlukova EV. Phase-shifting devices with thyristor control. Energetik. 2010;8:20–23. (In Russ.)

6. Hingorani NG, Gyugui L. Understanding FACTS: concepts and technology of flexible AC transmission systems. Institute of Electrical and Electronics Engineers; 1999, 452 р. https://doi.org/10.1002/9780470546802

7. Misrihanov MSh, Ryabchenko VK, Sitnikov VF. Fundamentals of FACTS technology. Elektro-Info. 2007;12:61–69. (In Russ.)

8. Dobrusin LA. Energy efficiency and energy saving problems in Russia. Information and analytical review. Part III. Application trends of phase-shifting transformers in electric power industry. Silovaya elektronika. 2012;4:60–66. (In Russ.)

9. Evdokunin G, Nikolaev R, Iskakov A, Ospanov B, Utegulov N. Kazakhstan is the first in the CIS to use a phase-shifting transformer. Novosti elektrotehniki. 2008;6:12–16. (In Russ.)

10. Misrihanov MSh, Sitnikov VF, Tuzlukova EV, Hvoshchinskaya ZG, Zlobina MA, Ivashchenko TE. Possibilities to use phase-shifting devices in the Unified National All-Russian Grid. Vestnik Ivanovskogo gosudarstvennogo energeticheskogo universiteta = Vestnik of Ivanovo State Power Engineering University. 2005;5:42–44. (In Russ.)

11. Akimov DA, Korovkin NV, Odintsov MV, Frolov OV. The method of choosing the placement and parameters of phase-shifting transformers. Izvestiya NTC edinoj energeticheskoj sistemi = STC of Unified Power System Proceedings. 2016;74:6–19. (In Russ.)

12. Akimov DA, Gladyshev OY, Borisov PS. The phaseshifting transformers placement and settings choice method development. Izvestiya NTC edinoj energeticheskoj sistemi = STC of Unified Power System Proceedings. 2016;75:67–74. (In Russ.)

13. Wolfram M, Marten A-K, Westermann D. A comparative study of evolutionary algorithms for phase shifting transformer setting optimization. In: IEEE International Energy Conference (ENERGYCON). 2016. https://doi.org/10.1109/ENERGYCON.2016.7514056

14. Vodennikov DA. Application of a phase-shifting device for increasing the grid transmission capacity. Vestnik Moskovskogo energeticheskogo instituta. 2020;3:75–80. (In Russ.) https://doi.org/10.24160/1993-6982-2020-3-75-80.

15. Stavickij SA, Shestakova VV. Application of a phaseshifting device in the Altai power system. Intellektual'nye energosistemy: trudy IV Mezhdunarodnogo molodyozhnogo foruma = Intelligent power systems: Proceedings of IV International Youth Forum: in 3 volumes. 10–14 October 2016, Tomsk. Tomsk: Tomsk Polytechnic University; 2016, vol. 2, р. 324–327. (In Russ.)

16. Stelmakov VN, Zhmurov VP, Tarasov AN, Grinshtein BI, Tuzlukova EV. Thyristor- controlled phase-shifting devices. Energetik. 2010;8:20–23. (In Russ.)

17. Rashitov PA, Remizevich TV. Control features of semiconductor phase-shifting devices with a midpoint. Silovaya elektronika. 2011;1:78–82. (In Russ.)

18. Panfilov DI, Rashitov PA, Remizevich TV, Fedorova MI. Advancing the controllability zone of semiconductor phase-shifting devices by means of thyristor switch control algorithms. In: Dinamika nelinejnyh diskretnyh elektromekhanicheskih i elektronnyh sistem: materialy XI Vserossijskoj nauchnoj konferencii = Dynamics of nonlinear discrete electromechanical and electronic systems: Proceedings of XI All-Russian scientific conference. Cheboksary: Chuvash University Publishing House. 2015, р. 286–289. (In Russ.)

19. Akhmetov IM, Lachugin VF. Diagnostics of phaseshifting device with thyristor switch. Izvestiya vuzov. Elektromekhanika = Scientific and Technical Journal. Russian Electromechanics. 2015;1:16–20. (In Russ.) https://doi.org/10.17213/0136-3360-2015-1-16-20

20. Astashev MG, Panfilov DI. Phase-shifting devices with thyristor switches for active-adaptive electrical networks. Elektrichestvo. 2013;8:60–65. (In Russ.)